/**
 * Copyright (C) 2024 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef BF_P4C_PHV_SPLIT_PADDING_H_
#define BF_P4C_PHV_SPLIT_PADDING_H_

#include <ir/ir.h>

#include "ir/visitor.h"

class PhvInfo;

/**
 * @brief Splits padding after PHV allocation to prevent extracted padding spanning multiple
 * containers.
 *
 * Prevent padding from spanning multiple containers to help passes like UpdateParserWriteMode that
 * unifies the write modes for all fields in a container.
 */
class SplitPadding : public Transform {
 protected:
    const PhvInfo &phv;

    const IR::Node *preorder(IR::BFN::ParserState *state) override;

 public:
    explicit SplitPadding(const PhvInfo &phv) : phv(phv) {}
};

#endif /* BF_P4C_PHV_SPLIT_PADDING_H_ */
